6421349486 has 16 divisors (see below), whose sum is σ = 9974734848. Its totient is φ = 3097104600.

The previous prime is 6421349483. The next prime is 6421349509. The reversal of 6421349486 is 6849431246.

It is a self number, because there is not a number n which added to its sum of digits gives 6421349486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421349483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147230 + ... + 185793.

It is an arithmetic number, because the mean of its divisors is an integer number (623420928).

Almost surely, 2^6421349486 is an apocalyptic number.

6421349486 is a deficient number, since it is larger than the sum of its proper divisors (3553385362).

6421349486 is a wasteful number, since it uses less digits than its factorization.

6421349486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333367.

The product of its digits is 995328, while the sum is 47.

The square root of 6421349486 is about 80133.3231932883. The cubic root of 6421349486 is about 1858.6977324047.

The spelling of 6421349486 in words is "six billion, four hundred twenty-one million, three hundred forty-nine thousand, four hundred eighty-six".